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9.33.6.8.(5)
OS1OP1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Registers installed in a floor directly over a pipeless furnace in which the rated heat input does not exceed 120 kW and serving only one dwelling unit, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability of the ignition of combustible material by heat radiated from pipeless furnaces, which could lead to harm to persons.
Intent 2: 
To exempt from the application of Sentences (2), (3) and (4) situations where it is impractical to achieve the minimum clearances and where effective alternative measures are employed.
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